ASTROSAT CZTI

Data Quality Report

Orbit 41393

Creation date: 2024-06-27T22:28:30.637001
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_105T01_9000005662_41393cztM0_level2.fits modeM0/AS1T05_105T01_9000005662_41393cztM0_level2_quad_clean.evt
Size (bytes)1,843,133,760456,514,560
Size1.7 GB 435.4 MB
Events in quadrant A14,749,3033,134,781
Events in quadrant B13,261,7903,213,980
Events in quadrant C15,016,5382,970,622
Events in quadrant D23,057,9072,600,173

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01070
B01070
C01070
D01070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05640
B05640
C05640
D05640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0597487
B0582486
C0618536
D0874026

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27683860.310660%
B276833341.206517%
C276838403.034353%
D2768326399.532926%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 38376 27690 34 34 0.09% 0.12%
B 38376 27690 240 240 0.63% 0.87%
C 38376 27690 852 852 2.22% 3.08%
D 38375 27689 2149 2149 5.60% 7.76%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 2356153 3737.31 3100 3045 629.6
A 13 248 217166 340.08 3100 3045 629.6
A 12 189 115513 178.63 3100 3045 629.6
B 0 186 620582 1051.69 3069 2996 587.2
B 0 190 252763 425.33 3069 2996 587.2
B 5 255 160251 267.79 3069 2996 587.2
C 0 10 2137006 3126.05 2953 2973 682.7
C 15 214 1143457 1670.64 2953 2973 682.7
C 2 16 201101 290.23 2953 2973 682.7
D 2 249 4627593 6565.27 2873 2792 704.4
D 1 52 2291925 3249.61 2873 2792 704.4
D 13 249 1690889 2396.39 2873 2792 704.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter